The Manchester City goalkeeper has come under fire in recent weeks after mistakes have started to creep into his game.

Hart was blamed in some quarters for Birmingham's first equaliser in their 2-2 draw with City on Wednesday night which many feel effectively signalled the end of their Premier League title bid.

But, while Hart acknowledges the right of the doubters to have their say, he does not believe they are accurate.

"People are entitled to their opinions and can say what they want," he said.

"But when it comes to football, I focus.

"I don't know what else there is to think about when you are in goal. What else I could be considered to be concentrating on?

"It is not as if there is a movie going on in the background or you are doing your homework and a fly comes into the room and you go after it.

"There is a ball. That is it."

Hart was speaking at a 'Strike A Balance' event at Eastlands to promote healthy eating among children.

The initiative is a partnership between the club's 'City in the Community' scheme, Manchester Healthy Schools and Manchester City Council that will offer a free five-week programme to 120 primary schools in Manchester.

Pupils from Higher Openshaw Primary School were joined by Hart and Shay Given for a cook-off, under the guidance of celebrity chef Marco Pierre White.

"He has quite a lengthy stare. You don't know whether he is playing or not," said Hart afterwards.

"But it is a great idea because it shows youngsters that healthy food isn't boring."